Decrement Field Value By 1, Using A Single Query

Dec 15, 2005

Hi,

I have a product table in Access, like this:

product_id | product_name | product_quantity



I need to be able to do an SQL update on this table to subtract 1 from the product_quantity field.

I could do this with two SQL queries (SELECT product_quantity, then subtract 1, then UPDATE table) but I'm sure there must be a way just to run one query which subtracts 1 from the field.

Does anyone know how to do this?

Any help would be fantastic, thanks!

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Nov 23, 2005

I have set up a parameter query in Access 2003 that asks the user for the "Section", such as "Admin", "Accounting" etc.

I need them to be able to respond to the prompt with more than one section if they want- sometimes just one, sometimes two or three or four.

So they can get "Accounting" and "Admin" both in the records that are returned.

The code:
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REPOST from Design Area

Hello all,

I hope that the following explination of my problem in clear...

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